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Thread: Challenge Week #3: Throwers Only! Got Throw??

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    Ooo Challenge Week #3: Throwers Only! Got Throw??

    Thrower: A light with a beam profile which concentrates most of the output into a center "hot spot", to send more intensity far down range for distant illumination. The D and C cell Maglites are well-known examples of this type of light.

    Good for lighting things far away; not so good for lighting things that are only a few feet in front of you, since the spill beam tends to be overpowered by the much brighter hotspot, which is very small at close range.

    The Challenge: This week, use only "thrower" types of lights! It can be any number of lights, any output range, but the lights used must all have the "thrower" beam profile.

    Techno-babble:

    Don't base this on lux numbers alone! Many recent lights have high lux numbers just because they have a huge lumen output, but the beam profile is actually more of a flood light! The beam profile of a thrower should look more like this:

    TK20


    TK12


    Stock SureFire 6P incan module (6V) in a SolarForce host


    These old-school examples should give the idea. There are many lights out there right now being marketed as "throwers" but if you look at their Lux-to-Lumen ratio, it's actually less (often significantly less) than the lights above. For example, the TK20 has been measured at about 6000 lux on its 150 lumen output. So Lux/Lumen = 40. You can use that as a rough guide to see how effective any given "thrower" really is.

    Many newer lights that I checked have ratios more like 15 lux/lumen, so a true thrower may be harder to find than you think!

    ---------------------------------

    The challenge this week will make us get creative at using a thrower beam for all tasks, not just long range/outdoor use. Using beam modifiers (diffusers, tape, etc) is NOT allowed. --edited to change this from original post, after reconsideration; see later posts below.

    Rules list can be found in the first post here (I added an item as an addendum to the original set):

    Link to Thread with Rules List


    That's it! Have fun!
    Last edited by Stress_Test; 01-24-2021 at 10:19 AM. Reason: changed to disallow diffusion

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